NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 680-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NY
— 680-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-639 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GOUVERNEUR NY
— 680-697 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C SYRACUSE NY
— 680-700 not yet reported which blocks → NY
— 680-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-777 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC- NY 384C BRIDGEPORT NY
— 680-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-850 not yet reported which blocks → NY
— 680-888 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C MADRID NY
— 680-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 680-950 not yet reported which blocks → NY
— 680-958 not yet reported which blocks → NY
— 680-959 not yet reported which blocks → NY
— 680-970 not yet reported which blocks → NY
— 680-976 not yet reported which blocks → NY
— 680-999 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C ANTWERP NY
— 681-202 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - WV 449F SNOWSHOE WV
— 681-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-218 0–9 XXXall 10 · 5 holders which blocks → LUMOS NETWORKS INC. - VA 7849 ANSTED WV
— 681-221 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CSC VOICE, LLC 612K EAST BANK WV
— 681-257 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - WV 449F MANNINGTON WV
— 681-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-341 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
— 681-359 3XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - WV 449F VALLEY ML WV
— 681-367 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → COMMIO, LLC 939H WESTON WV
— 681-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-433 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H WESTON WV
— 681-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-690 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → NUSO, LLC 732J BRANDYWINE WV
— 681-700 not yet reported which blocks → WV
— 681-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-755 not yet reported which blocks → T-MOBILE USA, INC. 6529 ANSTED WV
— 681-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT WV
— 681-950 not yet reported which blocks → WV
— 681-958 not yet reported which blocks → WV
— 681-959 not yet reported which blocks → WV
— 681-976 not yet reported which blocks → WV
— 682-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 682-214 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NRICHLDHLS TX
— 682-216 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
— 682-222 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C MANSFIELD TX
— 682-225 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C GLENDALE TX
— 682-231 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C FORT WORTH TX
— 682-235 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C FORT WORTH TX
— 682-248 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
— 682-253 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ATLAS TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.